Unless you really need a high yield of DNA, it is possible to do genetic analyses directly on hatched miracidia excreted from the definitive hosts. This is ethically superior as it negates the need for killing the defintive host, and also avoids any genetic bottlenecks you may get from laboratory passage. Some papers on this:

http://www.ncbi.nlm.nih.gov/pubmed/17096873

http://www.ncbi.nlm.nih.gov/pubmed/19030225

Good luck!

James

The best approach as indicated by James is to collect eggs, hatch miracidia and place on FTA cards for future DNA extraction. If you really do need adult worms they can be recovered by dissection or perfusion. The actual site will depend on the species under investigation.

David

the referenced articles reference calls out natural life cycle stages

not egg derived

http://www.ncbi.nlm.nih.gov/m/pubmed/16255820/?i=2&from=/17096873/related

Sent from Taiho, mistakes are learning touchstones...pls enlighten those I made or make...

these are trematodes so I have no expertise but you can infect yourself to verify results. of course dont but it goes to show how committed are we when cures arent but statistical maybe's. my fair skin provided my laboratory as i was intentionally infected by Emeryville Ca community and its police department that uses involuntary civil commitment to terrorize AND fund raise ($2k) per ambulance segment 2 per trip to psyche ward to avoid judicial oversight and discredit if ever allowed in court.

heinous yet a potential tumor treatment i came up with while They "clockworked orange"d me for two years

You can contact Dr.M.C.Agarwal, Dept of Veterinary Parasitology, Jabalpur, M.P,India or you can search his articles in google.

In the bovine, you can collect them by scooping blood from around the messenteric vessels during the evisceration of the animals at slaughter. Usually you will find some Schistosoma in the bloody material collected.

Collect from mesentric blood vessels or wash the mesentry in normal saline repeatedly and the flukes will be collected in the washings